CN217470274U - Loudspeaker system - Google Patents
Loudspeaker system Download PDFInfo
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- CN217470274U CN217470274U CN202221601237.1U CN202221601237U CN217470274U CN 217470274 U CN217470274 U CN 217470274U CN 202221601237 U CN202221601237 U CN 202221601237U CN 217470274 U CN217470274 U CN 217470274U
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Abstract
A speaker system comprising: the audio signal module is used for outputting an audio signal; the moving coil component module is coupled with the audio signal module and used for receiving the audio signal; and the piezoelectric component module is coupled with the audio signal module, is connected with the moving coil component module in series and is used for receiving the audio signal. By means of the series connection of the moving coil component module and the piezoelectric component module, the problem of audio signal asynchronism is avoided.
Description
Technical Field
The utility model relates to a speaker system architecture especially relates to a speaker system architecture with moving coil loudspeaker and piezoelectric type speaker series connection use.
Background
In the existing technology of speaker systems, because the voltages of the input signals required by the moving-coil speaker and the piezoelectric speaker are different, when the moving-coil speaker and the piezoelectric speaker are used in the same speaker system, it is often necessary to perform signal processing (for example, amplifying the signals by an amplifying circuit) on the moving-coil speaker and the piezoelectric speaker after the audio signals are decoded, and then provide the processed audio signals to the moving-coil speaker and the piezoelectric speaker respectively for use.
In addition, the piezoelectric speaker (capacitive load) presents a low impedance load state (approximate short circuit) when a high frequency signal is input, so in the prior art, in order to avoid the problem of short circuit when the amplifying circuit outputs the high frequency signal to the piezoelectric speaker, a resistor is connected in series between the output end of the amplifying circuit and the piezoelectric speaker. However, although the use of the resistor can directly and effectively prevent the output end of the amplifier circuit from short-circuiting, the use of the resistor with higher impedance can reduce the frequency response bandwidth and consume excessive output power on the resistor, and the use of the resistor with lower impedance can cause the output power consumption at high frequency to be too high and even damage the amplifier circuit, so that the proper resistor must be selected to balance the frequency response bandwidth and the output power, and the piezoelectric speaker is used in the existing speaker system.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a speaker system makes the utility model discloses a piezoelectric assembly module of speaker system can not series resistance, through the mode with moving coil subassembly module and piezoelectric assembly module series connection, avoids audio signal asynchronous problem to can carry out impedance matching through moving coil subassembly module and piezoelectric assembly module, need not additionally consume output on resistance, directly provide output in speaker system's sound production subassembly (exactly the utility model provides a moving coil subassembly module and piezoelectric assembly module).
The utility model provides a speaker system includes: the audio signal module is used for outputting an audio signal; the moving coil component module is coupled with the audio signal module and used for receiving the audio signal; and the piezoelectric component module is coupled with the audio signal module, is connected with the moving coil component module in series and is used for receiving the audio signal.
In an embodiment of the present invention, the moving coil assembly module of the speaker system includes a plurality of moving coil assemblies, and the plurality of moving coil assemblies are connected in series or in parallel.
In an embodiment of the present invention, the piezoelectric module of the speaker system includes a plurality of piezoelectric modules, and the plurality of piezoelectric modules are connected in series or in parallel.
In an embodiment of the present invention, the audio signal module of the speaker system includes an audio signal codec and an amplifying circuit.
In an embodiment of the present invention, the speaker system further includes: and the selector switch is coupled with the audio signal module and the moving coil component module and used for switching the output path of the audio signal.
In an embodiment of the present invention, the speaker system further includes: the plurality of switches are coupled with the audio signal module and the moving coil component module and used for switching the output path of the audio signal.
In an embodiment of the present invention, the switch of the speaker system is a single-shaft double-switch.
In an embodiment of the present invention, the moving coil module and the piezoelectric module of the speaker system play the sound corresponding to the audio signal synchronously.
To sum up, the utility model discloses a loudspeaker system can borrow by the series connection of moving coil subassembly module and piezoelectric assembly module, and then avoids audio signal asynchronous problem, compares in the loudspeaker system of knowing in addition, the utility model discloses a loudspeaker system more possesses the technical efficiency that does not need extra consumption output on resistance, can directly provide the sound production subassembly of output in loudspeaker system.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a system block diagram of a speaker system according to an embodiment of the present invention;
fig. 2 is a system block diagram of a speaker system according to another embodiment of the present invention; and
fig. 3 is a system block diagram of a speaker system according to another embodiment of the present invention.
Detailed Description
Referring to fig. 1, a system block diagram of a speaker system according to an embodiment of the present invention is shown.
In this embodiment, the speaker system 1 of the present invention includes: an audio signal module 11, a moving coil component module 12, and a piezoelectric component module 13; the audio signal module 11 is connected to the moving coil module 12, and the piezoelectric module 13 is connected to the moving coil module 12 and the audio signal module 11.
In this embodiment, the speaker system 1 of the present invention outputs an audio signal through the audio signal module 11, and receives the audio signal through the series connection of the moving coil module 12 and the piezoelectric module 13, and then plays the sound of the audio signal output by the corresponding audio signal module 11 synchronously through the moving coil module 12 and the piezoelectric module 13.
In this embodiment, the audio signal module 11 of the speaker system 1 of the present invention includes an audio signal codec 111 and an amplifying circuit 112, wherein the amplifying circuit 112 includes an output end 1121. The utility model discloses an audio signal module 11 of speaker system 1 connects moving coil subassembly module 12 and piezoelectric assembly module 13 to be used for exporting audio signal. For example, the audio signal module 11 can encode or decode the audio source of the external device from the external device such as a computer or a mobile phone capable of providing the audio source through the audio signal codec 111, convert the audio source into a voltage signal usable by the speaker system 1 (e.g. a digital audio signal can be converted into an analog audio signal, and then provide the analog audio signal to the speaker system 1 for use), and then pass the converted voltage signal through the amplifier circuit 112, and output the audio signal to the moving coil module 12 and the piezoelectric module 13 through the output node a (e.g. the positive terminal of the output voltage, but may also be the negative terminal of the output voltage, corresponding to the opposite polarity of the output node B) and the output node B (e.g. the negative terminal of the output voltage, but may also be the positive terminal of the output voltage, corresponding to the opposite polarity of the output node a), the coil block module 12 and the piezoelectric block module 13 are synchronized to play the sound corresponding to the audio signal output from the audio signal module 11. In this embodiment, although the audio signal module 11 includes the audio signal codec 111 and the amplifying circuit 112, the present invention is not limited thereto, and the audio signal module 11 may not include the audio signal codec and/or the amplifying circuit, and can be used as the audio signal module of the speaker system as long as it can output the audio signal enough to drive the moving coil module and the piezoelectric module connected in series. In this embodiment, although the output contact a and the output contact B of the output end 1121 are disposed in the amplifying circuit 112, any output contact that can output an audio signal sufficient to drive the series-connected moving coil module and piezoelectric module may be used as the output contact a and/or the output contact B of the speaker system of the present invention, which is not limited thereto.
In this embodiment, the moving coil module 12 included in the speaker system 1 of the present invention is connected to the audio signal module 11 through the output contact a of the output end 1121, and is connected to the piezoelectric module 13 in series to receive the audio signal output by the audio signal module 11. In the present embodiment, the load characteristic of the moving coil assembly module 12 is a resistive load (or a load close to the resistive load, and generally, the resistance value of each moving coil assembly is between about 3 Ω and 16 Ω, but the present invention is not limited thereto), and may include one or more moving coil assemblies (e.g., a moving coil speaker). For example, in the case of a plurality of moving coil elements, the moving coil elements may be connected in series or in parallel to form the moving coil element module 12 of the present embodiment, and one moving coil element or a plurality of moving coil elements may be connected in series or in parallel to perform impedance matching according to the capacitance value of the piezoelectric element module 13 (capacitive load) to adjust the impedance of the speaker system 1, so that when the amplifying circuit 112 outputs a high-frequency audio signal (for example, an audio signal with a frequency of 5kHz or more), the moving coil element module 12 is connected in series to the piezoelectric element module 13 to ensure that the amplifying circuit 112 does not generate a short circuit phenomenon (or an excessively high current value) when outputting a high-frequency audio signal due to the load characteristic (capacitive load) of the piezoelectric element module 13, which presents a low impedance when applying a high-frequency signal), and then cause the problem that amplifier circuit 112 damaged to it is different from the loudspeaker system of knowing, the utility model discloses a loudspeaker system 1's structure except can avoiding the use of resistance, does not need extra consumption output on resistance, can directly provide the sound production subassembly of output in loudspeaker system 1 (in the utility model discloses in be moving coil subassembly module 12 and piezoelectric module 13), the adjustment is suitable for the utility model discloses a loudspeaker system 1's power consumption, more possess the technical efficiency that can avoid producing like in the loudspeaker system of knowing, the audio signal asynchronous problem of moving coil subassembly module 12 and piezoelectric module 13.
In this embodiment, the piezoelectric module 13 included in the speaker system 1 of the present invention is connected to the audio signal module 11 through the output contact B of the output end 1121, and is connected to the moving coil module 12 in series to receive the audio signal output by the audio signal module 11. In the present embodiment, the load characteristic of the piezoelectric device module 13 is a capacitive load, and may include one or more piezoelectric devices (e.g., piezoelectric speakers), for example, in the case of multiple piezoelectric devices, the piezoelectric devices may be connected in series or in parallel to form the piezoelectric device module 13 of the present embodiment, and the impedance of the speaker system 1 is adjusted by adjusting the capacitance of the piezoelectric device module 13 and performing impedance matching with the moving coil device module 12 (resistive load) by using one piezoelectric device or by connecting multiple piezoelectric devices in series or in parallel.
Next, please refer to fig. 2, which is a system block diagram of a speaker system according to another embodiment of the present invention.
In this embodiment, the speaker system 1' of the present invention includes: an audio signal module 11, a moving coil component module 12, a piezoelectric component module 13, and a changeover switch 14; the audio signal module 11 is connected to the switch 14 through an output contact a, the switch 14 is connected to the moving coil module 12 in parallel, and the piezoelectric module 13 is connected to the moving coil module 12 in series, connected to the switch 14, and connected to the audio signal module 11 through an output contact B.
In this embodiment, the functions of the audio signal module 11, the moving coil module 12, and the piezoelectric module 13 of the speaker system 1' of the present invention are the same as those of the previous embodiments, and are not repeated herein, and only the components of this embodiment that are different from the previous embodiments in connection relationship and/or function will be described.
In this embodiment, the switch 14 included in the speaker system 1' of the present invention is connected to the output contact a of the audio signal module 11, the moving coil module 12 connected in parallel, and the piezoelectric module 13 connected to the switch for switching the output path of the audio signal output by the audio signal module 11.
For example, as shown in fig. 2, the switch 14 may be, for example, a Single Pole Double-Pole three (SPDT), and the Common node (Common, generally denoted by COM) of the switch 14 is connected to the output node a (in the present embodiment, the output node a is exemplified by the positive Pole of the output voltage, but the present invention is not limited thereto), the Normally Closed node (generally denoted by N/C) is connected to the first end of the moving coil module 12, and the Normally Open node (generally denoted by N/O) is connected to the second end of the moving coil module 12 and the first end of the piezoelectric module 13.
In the case where the state of the changeover switch 14 is not switched (i.e., the path of the normally closed contact), the output path of the audio signal output by the audio signal module 11 is as follows: output contact a (positive output voltage) → change-over switch 14 → "moving coil module 12 →" piezoelectric module 13 → "output contact B (negative output voltage) →; when the state of the switch 14 is switched (i.e., the path of the normally open contact), the output path of the audio signal output by the audio signal module 11 is as follows: output contact a (positive output voltage) → change-over switch 14 → piezoelectric module 13 → output contact B (negative output voltage); that is, the switch 14 can switch the output path of the audio signal output by the audio signal module 11 by connecting the moving coil module 12 in parallel in a short circuit manner.
In this embodiment, although the output contact a is an output voltage positive pole and the output contact B is an output voltage negative pole as an example, the present invention is not limited thereto, that is, the output contact a may be implemented as an output voltage negative pole and the output contact B as an output voltage positive pole, and when the state of the switch 14 is not switched (i.e., the path of the normally closed contact), the output path of the audio signal output by the audio signal module 11 is as follows: output contact a (negative output voltage) → change-over switch 14 → moving coil module 12 → piezoelectric module 13 → output contact B (positive output voltage) →; when the state of the switch 14 is switched (i.e., the path of the normally open contact), the audio signal output from the audio signal module 11 is output as follows: "output contact a (negative output voltage)" → "changeover switch 14" → "piezoelectric device module 13" → "output contact B (positive output voltage)".
The utility model discloses a switch 14 of speaker system 1 ' can switch the audio signal's of audio signal module 11 output path according to user's demand. For example, the user may select an output path suitable for music (i.e., "whether to activate the moving coil device module 12") after listening to the music, by switching different output paths one after another. In another embodiment, the switch 14 can be connected in parallel to the piezoelectric device module 13 in the same manner to selectively switch "whether to activate the piezoelectric device module 13" (not shown). In one embodiment, the switches 14 may be used to switch the output path of the audio signal output by the audio signal module 11, for example, the switches 14 may individually select and switch "whether to enable or not to enable some moving coil elements in the moving coil element module 12" for the plurality of moving coil elements in the moving coil element module 12 (not shown) to switch the output path of the audio signal output by the audio signal module 11.
In the present invention, although the change-over switch 14 is a Single-shaft Double-break Switch (SPDT), the switch 14 of the present invention does not use the switch type of the Single-shaft Double-break switch as a limit, and any short circuit can be used, and the switch of the output path of the audio signal outputted by the switching audio signal module 11 by means of the parallel connection moving coil module 12 can be used as the change-over switch 14, the switch type of the present invention does not use the switch type as a limit.
Next, please refer to fig. 3, which is a block diagram of a speaker system according to another embodiment of the present invention.
In this embodiment, the speaker system 1 ″ of the present invention includes: an audio signal module 11, a moving coil component module 12, a piezoelectric component module 13, and a changeover switch 14; the audio signal module 11 is connected to the piezoelectric module 13 through an output contact a, the piezoelectric module 13 is connected to the switch 14, the switch 14 is connected to the moving coil module 12 in parallel, and the moving coil module 12 is connected to the piezoelectric module 13 in series and connected to the audio signal module 11 through an output contact B.
In this embodiment, the functions of the audio signal module 11, the moving coil module 12, the piezoelectric module 13, and the switch 14 of the speaker system 1 ″ are the same as those of the previous embodiments, and are not repeated herein, and only the components in this embodiment that are different from the previous embodiments in connection relationship and/or function will be described.
In this embodiment, the speaker system 1 ″ of the present invention is different from the foregoing embodiments in the connection manner of the changeover switch 14. As shown in fig. 3, an output node a of the output end 1121 is connected to a first end of a piezoelectric module of the piezoelectric module 13, a second end of the piezoelectric module 13 is connected to a common node of the switch 14, a normally closed node of the switch 14 is connected to a first end of a moving coil module of the moving coil module 12, a normally open node of the switch 14 is connected to a second end of the moving coil module 12, and a second end of the moving coil module 12 is connected to an output node B of the output end 1121. In this embodiment, another connection manner of the switch 14 is provided, and the operation function principle of this connection manner is the same as that of the foregoing embodiment, and therefore, repeated description is not repeated in the functional principle part.
To sum up, the utility model discloses a loudspeaker system can borrow by the series connection of moving coil subassembly module and piezoelectric assembly module, and then avoids audio signal asynchronous problem, compares in the loudspeaker system of knowing in addition, the utility model discloses a loudspeaker system more possesses the technical efficiency that does not need extra consumption output on resistance, can directly provide the sound production subassembly of output in loudspeaker system.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A speaker system, comprising:
an audio signal module for outputting an audio signal;
a moving coil module coupled to the audio signal module for receiving the audio signal; and
and the piezoelectric component module is coupled with the audio signal module, is connected with the moving coil component module in series and is used for receiving the audio signal.
2. The speaker system of claim 1, wherein the moving coil assembly module comprises:
a plurality of moving coil assemblies connected to each other in series or in parallel.
3. The speaker system of claim 1, wherein the piezoelectric element module comprises:
a plurality of piezoelectric elements connected to each other in series or in parallel.
4. The speaker system of claim 1, wherein the audio signal module comprises an audio signal codec and an amplification circuit.
5. The speaker system of claim 1, further comprising:
a switch coupled to the audio signal module and the moving coil module for switching the output path of the audio signal.
6. The speaker system of claim 1, further comprising:
and a plurality of switches coupled to the audio signal module and the moving coil module for switching the output path of the audio signal.
7. A loudspeaker system according to claim 5 or 6, wherein the switch is a single-axis double-switch.
8. The speaker system of claim 1, wherein the moving coil module and the piezoelectric module synchronously play sound corresponding to the audio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221601237.1U CN217470274U (en) | 2022-06-24 | 2022-06-24 | Loudspeaker system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221601237.1U CN217470274U (en) | 2022-06-24 | 2022-06-24 | Loudspeaker system |
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| Publication Number | Publication Date |
|---|---|
| CN217470274U true CN217470274U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221601237.1U Active CN217470274U (en) | 2022-06-24 | 2022-06-24 | Loudspeaker system |
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|---|---|
| CN (1) | CN217470274U (en) |
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- 2022-06-24 CN CN202221601237.1U patent/CN217470274U/en active Active
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